Thermal cycling behaviors of thermal barrier coatings on intermetallic Ni3Al based superalloy

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	Thermal cycling behaviors of thermal barrier coatings on intermetallic Ni3Al based superalloy
	D. B. Zhang; S. K. Gong; H. B. Xu; H. T. Zhang; Y. F. Han
	2003
发表期刊	Surface & Coatings Technology
ISSN	0257-8972
卷号	168 期号:1 页码:78-83
摘要	Ni3Al based alloy IC6, a high performance cast alloy with approximately 14 wt.% Mo addition, has been developed for turbine blades and vanes of advanced aero-engines and other high temperature structural components. However, because of the high Mo content, during high temperature use, Mo will diffuse into the protective coating layer, which will affect the thermal cycling performance directly. In order to block the diffusion and improve the thermal cycling behavior of thermal barrier coatings (TBCs), a Si chemical gradient MCrAlY-Si bond coat was prepared by changing the Si content from 0.35 wt.% at the interface of substrate and bond coat to almost 0 near to the surface of the bond coat. For comparison, conventional two-layered structural TBCs with MCrAlY as bond coat were also prepared. The fabricated coatings were evaluated for the microstructures and the composition distribution properties, such as thermal stability and resistance to oxidation. For the bond coat without Si addition, Mo, content near the surface was higher than 7 wt.% after isothermal oxidation at 1373 K for 60 h and 12.5 wt.% after thermal cycling tested at 1373 K for 300 It (600 cycles). However, in the Si chemical gradient bond coat, only 0.4 wt.% Mo was detectable after isothermal oxidation at 1373 K for 100 h and approximately 0.66 wt.% after thermal cycling tested at 1373 K for 340 h (680 cycles). (C) 2002 Elsevier Science B.V. All rights reserved.
部门归属	beihang univ, dept mat sci & engn, beijing 100083, peoples r china. state key lab corros & protect, shenyang 110016, peoples r china.;xu, hb (reprint author), beihang univ, dept mat sci & engn, beijing 100083, peoples r china
关键词	Thermal Barrier Coatings Electron Beam Physical Vapor Deposition Ni3al Based Alloy Ic6 Vapor-deposition Si
URL	查看原文
WOS记录号	WOS:000182105100011
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/36152
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. B. Zhang,S. K. Gong,H. B. Xu,et al. Thermal cycling behaviors of thermal barrier coatings on intermetallic Ni3Al based superalloy[J]. Surface & Coatings Technology,2003,168(1):78-83.
APA	D. B. Zhang,S. K. Gong,H. B. Xu,H. T. Zhang,&Y. F. Han.(2003).Thermal cycling behaviors of thermal barrier coatings on intermetallic Ni3Al based superalloy.Surface & Coatings Technology,168(1),78-83.
MLA	D. B. Zhang,et al."Thermal cycling behaviors of thermal barrier coatings on intermetallic Ni3Al based superalloy".Surface & Coatings Technology 168.1(2003):78-83.